I have a 3gs; ios 4.1 BB 6.15.00. I JB and unlocked it in Sept. 2011 (moved to Turkey). Now, I want to order an official unlock and update the ios. Have spent the past couple of nights reviewing how to downgrade the BB to 5.13.04 so I can hopefully get a AT&T Factory Unlock (My phone is AT&T - old bootrom). My only question(s) is this; when I download the IPSW file of the current ios, it must be 4.1, right?
And second, when I downgrade the BB to 5.13.04 running on ios 4.1, all I should have to do is order the Factory Unlock and follow the directions to restore?
Just a little nervous, first time I am attempted this,
Thanks so much....
And second, when I downgrade the BB to 5.13.04 running on ios 4.1, all I should have to do is order the Factory Unlock and follow the directions to restore?
Just a little nervous, first time I am attempted this,
Thanks so much....